Looking for a speaker cable with a relaxed sound.

What makes a cable good is the ability to transfer signal.
Using a cable as a tone controller is a not what good cables do.
Any cable can only be as good as the gear between which it is traveling. 

mglik has it right.  The better quality the cable, the least amount of distortion (change) it will have upon the signal.

Another happy Canare 4s11 user at $1.28 per ft from Redco what can you loose.

It's unfortunate that everybody comes out of the woodwork with drastically different opinions across the board on threads like this.  It just leaves the OP even more confused.

I have Focal Scala Evos and use Wireworld Eclipse 8 with Platinum Eclipse 8 interconnects.  I agree with the others that they are laid back and I think they match well with Focal.   I’ve tried Nordost Tyre 2, Clarity, Tara Labs One, Clarus Crimson, and Transparent reference and preferred the eclipse 8 in my system.  Good luck in your search!